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Finding the Fourth Proportional to 8,947.70, 13,396.02 and 7,101.50

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Solution

The fourth proportional to 8,947.70, 13,396.02 and 7,101.50 is: 10,631.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,947.70 : 13,396.02 = 7,101.50 : x
  2. Step 2: Convert to fraction form
    8,947.70/13,396.02 = 7,101.50/x
  3. Step 3: Cross multiply
    8,947.70x = 13,396.02 × 7,101.50
  4. Step 4: Simplify right side
    8,947.70x = 95,131,836.03
  5. Step 5: Solve for x
    x = 95,131,836.03/8,947.70
  6. Step 6: Final answer
    x = 10,631.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.